Microsoft's new Windows 10 operating system debuts Wednesday, as the longtime leader in PC software struggles to carve out a new role in a world where people increasingly rely on smartphones, tablets and information stored online.

Union Finance Minister Arun Jaitley on Monday spoke about the steps taken by the Central government over black money. Jaitley said that it is too early to say which route the government will take over bringing back black money.

In a choppy session, BSE Sensex slipped over 40 points in morning trade. NSE Nifty too dropped over 10 points owing to the start of the politically crucial week. The Indian markets made a soft start of the week and ended mildly in red in last session.